1Sam 21:5-6

5David answered the priest, “Indeed women have been kept from us as always when I go on an expedition; the vessels of the young men are holy even when it is a common journey; how much more today will their vessels be holy?”6So the priest gave him the holy bread; for there was no bread there except the bread of the Presence, which is removed from before the Lord, to be replaced by hot bread on the day it is taken away.